Closing drum wheel and cigarette making machine

Abstract

The utility model relates to the technical field of cigarette making machine equipment, in particular to an approaching drum wheel and a cigarette making machine, the approaching drum wheel is used for receiving cigarettes and tipping paper from an upstream workpiece and conveying the cigarettes and the tipping paper to a downstream workpiece, and the approaching drum wheel comprises an air valve for negative pressure air to pass through and a wheel body for adsorbing the cigarettes and the tipping paper by utilizing the negative pressure air, the air valve is of a hollow cylinder structure, the wheel body is arranged on the air valve in a sleeved mode, and the air valve is characterized in that the air valve does not rotate along with the wheel body and comprises a first air suction area and a second air suction area which are sequentially arranged in the circumferential direction of the air valve; the first air suction area is arranged close to an upstream workpiece, the second air suction area is arranged close to a downstream workpiece, and the negative pressure of negative pressure air passing through the first air suction area is higher than that of the second air suction area; according to the utility model, the gas circuit design of the closing drum wheel is improved, so that cigarettes and tipping paper can be smoothly connected during receiving and releasing, and the quality of cigarette products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette making machine equipment, in particular to a close drum wheel and a cigarette making machine. Background Art

[0002] In cigarette making machines like the PROTOS70, key processes such as conveying, closing, and splicing cigarettes are efficiently accomplished through multiple, coordinated drum systems. The closing drum, a core component, operates as follows: It receives three long cigarette segments (a short cigarette + filter segment + short cigarette) from an upstream workpiece. As the three segments travel along the closing drum, floating rings at each end apply appropriate pressure to the segments, tightly closing them. Simultaneously, pre-coated tipping paper is applied to the closed segments during this process. Driven by the closing drum, the three segments are then transported in an orderly fashion to subsequent processing steps.

[0003] The existing approaching drum adopts a diffused negative pressure suction air path design, which aims to ensure that the negative pressure distribution in each working area of ​​the approaching drum remains relatively uniform. However, in the actual production process, the requirements of cigarettes and tipping paper for negative pressure adsorption force at different transfer stages are not constant. In particular, there are significant differences in the requirements for negative pressure strength between the two stages, especially in the receiving stage of receiving cigarettes and tipping paper from the upstream workpiece, and the releasing stage of releasing cigarettes and tipping paper to the downstream workpiece. Specifically, in the receiving stage, the relatively weak negative pressure adsorption force will lead to unstable adsorption of cigarettes, causing quality problems such as cigarette deviation; in the release stage, once the large negative pressure adsorption force is instantly released, it may cause wrinkles in the tipping paper due to sudden relaxation, which will also cause cigarette quality problems. Therefore, a uniform negative pressure design cannot ensure the smooth transfer of cigarettes and tipping paper to the upstream or downstream workpiece, and it is easy to obtain finished cigarettes with quality defects. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the first aspect of the present invention aims to provide a drum wheel that is close to the drum and improves the air path design so that cigarettes and tipping paper can be smoothly transferred when receiving and releasing, thereby ensuring the quality of cigarette products.

[0005] The second aspect of the present invention aims to provide a cigarette making machine having the above-mentioned close drum.

[0006] According to the purpose of the first aspect of the utility model, the utility model provides a drum wheel for receiving cigarettes and tipping paper from an upstream workpiece and conveying them to a downstream workpiece, including an air valve for allowing negative pressure air to pass through and a wheel body that uses negative pressure air to absorb cigarettes and tipping paper. The air valve is a hollow cylindrical structure, and the wheel body is sleeved on the air valve. It is characterized in that the air valve does not rotate with the wheel body, and includes a first suction zone and a second suction zone arranged in sequence along its circumference; the first suction zone is arranged close to the upstream workpiece, and the second suction zone is arranged close to the downstream workpiece, and the negative pressure wind passing through the first suction zone has a higher negative pressure than that of the second suction zone.

[0007] Furthermore, the drum wheel and cigarette making machine provided by the present invention may also have the following feature: the air valve is coaxially arranged with the wheel body.

[0008] Furthermore, the approaching drum and cigarette making machine provided by the present invention may also have the following feature: at least one first air hole is provided on the air valve to form a first air suction area.

[0009] Furthermore, the drum wheel and cigarette making machine provided by the present invention may also have the following characteristics: at least one second air hole is opened on the air valve to form a second air suction area, and the total area of ​​the second air hole is larger than that of the first air hole.

[0010] Furthermore, the approaching drum and cigarette making machine provided by the present invention may also have the following feature: the first suction zone and the second suction zone are supplied with pressure by the same air source.

[0011] Furthermore, the closing drum and cigarette making machine provided by the present invention may also have the following feature: the first air hole and the second air hole are both rectangular structures.

[0012] Furthermore, the drum wheel and cigarette making machine provided by the present invention may also have the following features: it also includes a plurality of cigarette grooves for accommodating cigarettes, and the plurality of cigarette grooves are evenly arranged along the circumference of the wheel body; a plurality of suction holes for adsorbing cigarettes are opened in the cigarette grooves, and the suction holes are connected to the air valve.

[0013] Furthermore, the approaching drum and cigarette making machine provided by the present invention may also have the following characteristics: the groove wall of the cigarette groove forms a receiving part for receiving the tipping paper from the upstream component, and a groove is provided between two adjacent cigarette grooves; one end of the tipping paper is connected to the receiving part and the other end is suspended in the groove.

[0014] According to the purpose of the second aspect of the present invention, the present invention further provides a cigarette making machine, comprising the above-mentioned approaching drum wheel.

[0015] Furthermore, the approaching drum and cigarette making machine provided by the present invention may also have the following features: they also include a transmission drum forming an upstream component and a splicing drum forming a downstream component.

[0016] The beneficial effects of the utility model are:

[0017] 1. In this application, by providing a first suction zone, the adsorption capacity of the drum wheel when receiving cigarettes delivered from the upstream component is specifically enhanced, a stable adsorption effect is established, and the cigarettes are prevented from deflecting or even sliding due to insufficient adsorption force. By providing a second suction zone, the adsorption force of the drum wheel on the cigarettes and tipping paper gradually decreases as they move toward the downstream workpiece, achieving a smoother release process, reducing the risk of wrinkles formed due to sudden relaxation of the tipping paper due to instantaneous desorption, and maintaining its surface smoothness. The improved design of the air path described above facilitates the smooth transfer of cigarettes and tipping paper, ensuring the quality of the finished cigarettes obtained in subsequent operations.

[0018] 2. In this application, by designing a first air hole with a smaller air duct cross-sectional area, a larger negative pressure is generated to meet the strong adsorption force requirement required by the drum wheel during the receiving stage; by setting a second air hole with a larger air duct cross-sectional area, a smaller negative pressure is generated to avoid problems such as wrinkling of the tipping paper caused by excessive adsorption.

[0019] 3. In this application, the tipping paper is transported by designing a mode in which the receiving part and the groove cooperate to avoid the tipping paper with glue from contacting the surface of the wheel body, thereby ensuring the cleanliness of the wheel body and the cleanliness of the tipping paper before rubbing it with the cigarette, thereby improving the quality of subsequent cigarette products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the air valve of the present utility model;

[0023] Figure 3 It is a cross-sectional view of the air valve of the present utility model.

[0024] In the picture:

[0025] 1. Wheel body; 2. Air valve; 3. First air suction area; 4. Second air suction area; 5. First air hole; 6. Second air hole; 7. Smoke trough; 71. Socket; 8. Air suction hole; 9. Groove. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] The utility model provides a drum wheel that moves closer, and the specific structure is as follows:

[0028] A close drum, such as Figure 1-3 As shown, it is used to receive cigarettes and tipping paper from an upstream workpiece and transport them to a downstream workpiece, including an air valve 2 for allowing negative pressure wind to pass through and a wheel body 1 that uses the negative pressure wind to absorb cigarettes and tipping paper. The air valve 2 is a hollow cylindrical structure, and the wheel body 1 is sleeved on the air valve 2. It is characterized in that the air valve 2 does not rotate with the wheel body 1, and includes a first suction zone 3 and a second suction zone 4 arranged in sequence along its circumference; the first suction zone 3 is arranged close to the upstream workpiece, and the second suction zone 4 is arranged close to the downstream workpiece, and the negative pressure wind passing through the first suction zone 3 has a higher negative pressure than the second suction zone 4. The present invention provides a first suction zone 3 to specifically enhance the adsorption capacity of the drum wheel when receiving cigarettes delivered from the upstream component, establish a stable adsorption effect, and prevent the cigarettes from deflecting or even sliding due to insufficient adsorption force; by providing a second suction zone 4, the adsorption force of the drum wheel on the cigarettes and the tipping paper gradually decreases during their movement toward the downstream workpiece, achieving a smoother release process, reducing the risk of wrinkles formed by the sudden relaxation of the tipping paper due to instantaneous desorption, and maintaining its surface smoothness. The improved design of the air path is conducive to the smooth transfer of cigarettes and the tipping paper, ensuring the quality of the finished cigarettes obtained in subsequent operations. In order to ensure that the cigarettes can be stably adsorbed and their positions are not shifted, the air valve 2 is preferably arranged coaxially with the wheel body 1.

[0029] To realize the setting of the first suction zone 3 and the second suction zone 4, Figure 2 and Figure 3As shown, at least one first air hole 5 is provided on the air valve 2 to form a first suction zone 3; at least one second air hole 6 is provided on the air valve 2 to form a second suction zone 4. The total area of ​​the second air holes 6 is larger than that of the first air holes 5, ensuring that the negative pressure gradient from the first adsorption zone to the second adsorption zone decreases. By designing the first air hole 5 with a smaller air duct cross-sectional area, a larger negative pressure is generated to meet the strong adsorption force required by the drum during the receiving stage; by setting the second air hole 6 with a larger air duct cross-sectional area, a smaller negative pressure is generated to avoid problems such as wrinkling of the tipping paper caused by excessive adsorption. In order to avoid adding additional air source equipment, the first suction zone 3 and the second suction zone 4 are preferably supplied with pressure by the same air source to ensure the continuity and consistency of the airflow of the entire drum air path system, which is beneficial to system integration and maintenance.

[0030] In some embodiments, the first air hole 5 and the second air hole 6 are both rectangular structures with four parallel sides, which is conducive to uniform distribution of airflow therein, reducing the generation of eddies and turbulence, thereby making the flow state of airflow more stable when passing through.

[0031] In order to achieve the adsorption and transfer of cigarettes, Figure 1 As shown, the drum wheel further includes a plurality of cigarette slots 7 for accommodating cigarettes. The plurality of cigarette slots 7 are evenly arranged along the circumference of the wheel body 1, ensuring the stable positioning of the cigarettes during the transfer process and avoiding collision or misalignment. The cigarette slots 7 are provided with a plurality of air suction holes 8 for adsorbing cigarettes. The air suction holes 8 are connected to the air valve 2, so that negative pressure wind can act on the cigarettes through the air suction holes 8 and stably adsorb the cigarettes. As a further improvement of this embodiment, the slot wall of the cigarette slot 7 forms a receiving member 71 for receiving the tipping paper from the upstream component, and a groove 9 is provided between two adjacent cigarette slots 7. One end of the tipping paper is connected to the receiving member 71, and the other end is suspended in the groove 9, so as to prevent the tipping paper with glue from contacting the surface of the wheel body 1, thereby ensuring the cleanliness of the wheel body 1 and the cleanliness of the tipping paper before being rubbed with the cigarette, thereby improving the quality of subsequent cigarette products.

[0032] The utility model also provides a cigarette making machine, comprising the above-mentioned approaching drum, a transmission drum forming an upstream component, and a splicing drum forming a downstream component.

[0033] The contents described above can be implemented individually or in combination in various ways, and these variations are all within the scope of protection of the present invention.

[0034] In the description of the invention, it should be noted that relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "front," "back," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "several" means two or more.

[0036] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific embodiments of the present invention are not limited to these descriptions. For those skilled in the art of the present invention, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A drum wheel for receiving cigarettes and tipping paper from an upstream workpiece and delivering them to a downstream workpiece, comprising a wind valve (2) for allowing negative pressure air to pass through and a wheel body (1) for adsorbing cigarettes and tipping paper by using the negative pressure air, wherein the wind valve (2) is a hollow cylindrical structure, and the wheel body (1) is sleeved on the wind valve (2), characterized in that: The air valve (2) does not rotate with the wheel body (1), and includes a first air suction zone (3) and a second air suction zone (4) sequentially arranged along the circumference thereof; the first air suction zone (3) is arranged close to the upstream workpiece, and the second air suction zone (4) is arranged close to the downstream workpiece, and the negative pressure wind passing through the first air suction zone (3) has a higher negative pressure than that of the second air suction zone (4).

2. The approaching drum according to claim 1, characterized in that: The air valve (2) and the wheel body (1) are coaxially arranged.

3. The approaching drum according to claim 1, characterized in that: At least one first air hole (5) is provided on the air valve (2) to form the first air suction area (3).

4. The approaching drum according to claim 3, characterized in that: At least one second air hole (6) is provided on the air valve (2) to form the second air suction area (4), and the total area of ​​the second air hole (6) is larger than that of the first air hole (5).

5. The approaching drum according to claim 4, characterized in that: The first air suction area (3) and the second air suction area (4) are supplied with pressure by the same air source.

6. The approaching drum according to claim 4, characterized in that: The first air hole (5) and the second air hole (6) are both rectangular structures.

7. The approaching drum according to claim 1, characterized in that: It also includes a plurality of cigarette slots (7) for accommodating cigarettes, wherein the plurality of cigarette slots (7) are evenly arranged along the circumference of the wheel body (1); a plurality of air suction holes (8) for adsorbing cigarettes are provided in the cigarette slots (7), and the air suction holes (8) are connected to the air valve (2).

8. The approaching drum according to claim 7, characterized in that: The wall of the smoke trough (7) is formed with a receiving piece (71) for receiving the tipping paper from the upstream workpiece, and a groove (9) is provided between two adjacent smoke troughs (7); one end of the tipping paper is connected to the receiving piece (71), and the other end is suspended in the groove (9).

9. A cigarette making machine comprising the approaching drum according to any one of claims 1 to 8.

10. The cigarette making machine according to claim 9, characterized in that: It also includes a transmission drum for forming the upstream workpiece and a splicing drum for forming the downstream workpiece.

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